The Honda 90503-YG0-003 Plain Washer (6MM) is a genuine OEM component designed for WT20 and WT30 water pumps. As a direct Honda OEM part, this washer carries the exact dimensions Honda specifies for these pumps, ensuring a proper fit without guesswork. Honda supersedes parts at serial breaks, so confirm your pump's serial number against the fitment table before ordering.
Key Features
- Genuine OEM Dimensions — sourced directly from Honda, this 6MM washer meets the exact size and thickness Honda calls out for the WT20 and WT30, so it seats correctly every time
- Direct Replacement — installs in place of the original with no modification, keeping assembly straightforward during pump service or rebuild
- Broad Pump Fitment — listed for WT20 and WT30 water pumps; verify your serial number against the fitment table to confirm the correct application
A plain washer distributes the clamping load of a fastener across a broader surface area, protecting the component beneath it from damage and helping the fastener maintain its holding force over time. On water pumps such as the WT20 and WT30, washers like this one appear at various fastened joints where consistent clamp load matters for keeping the assembly tight under vibration and operating stress. Using the correct OEM-specified size ensures the load is spread as Honda intended — an undersized or incorrect washer can allow a fastener to work loose or damage the mating surface over repeated service intervals.
Part Details
| Part Number | 90503-YG0-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Plain Washer (6MM) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Water Pump | WT20, WT30 | All |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
